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如何向 AVCaptureVideoPreviewLayer 添加过滤器?我尝试制作 CIFilter 并将 AVCaptureVideoPreviewLayer.filters 属性设置为带有过滤器的数组,但它什么也没做。
I am creating a program in which I am fetching data from database and showing it in a table. I don't know how much record will be fetch from the database, but I have to print 3 records in a single